> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:openib-general- > [EMAIL PROTECTED] On Behalf Of Sean Hefty > Sent: Tuesday, November 29, 2005 6:30 PM > To: Kanevsky, Arkady > Cc: Ted H. Kim; [EMAIL PROTECTED]; [email protected] > Subject: Re: [swg] RE: [openib-general] socket based connectionmodel for > IBproposal -round 4 > > Kanevsky, Arkady wrote: > > Sean, > > SWG discussed today the extending private data format proposal to > > SIDR_REQ. > > The group does not see the need for it since ULP is no RDMA aware. > > That is ULP does not use RDMA operations. > > Do you have some specific ULP in mind for this functionality? > > For UDP a different IP address can be used for each message. There is no > > persistent connection. > > I didn't have any particular ULP in mind. I was thinking more of a > generic > application that wanted to use UDP style addressing over IB, similar to > what's > being discussed for using TCP style addressing over IB. > > It seems that there needs to be a way to map a given destination address > to a > remote QP/qkey. Regardless if the IP address is carried in each ULP > message, it > would still need to be in the SIDR REQ in order to locate the correct QP. >
Sean, How about using ARP to get from IP to DGID+Partition Followed by an SIDR to map DGID+PKey+Service to QKey & QP It is the same concept as CMA that first uses IP stack (ARP etc') to get to the remote end-point (in that case GID+PKey combination) followed by SA-PR and CM REQ, we just substitute the CM REQ with a SIDR REQ It may not solve all the cases but probably most of the practical ones Anyway the packets will need to carry some header (since it's not a connected model), you can add more stuff in that header (e.g. can use IPoIB header as is which contains already the src/dst IP) Yaron _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
